Sash cord ferrule



June 7, 1932- R. E. HAMILTON SASH CORD FERRULE Filed pt. 8, 1950 INVENTOR,

Zia; ZZZ/347177177 82/ ATTORNEYS- Patented June 7, 1932 ROY E. HAMILTON, OF KANSAS CITY, MISSOURI, ASSIGNOR TO LOOK JOINT WINDOW COMPANY, OF KANSAS CITY, MISSOURI, .A CORPORATION OF DELAWARE SASH CORD FERRUIJE Application filed. September 8, 1930. Serial No. 480,380.

This invention pertains to protecting tips for cordage and has for its primary ob]ect the provision of a ferrule especially adapted for use with window sash cords.

Another object of the invention is the provision of a new article of manufacture, particularly designed for use in connection with the installation of sash cords more especially Where the window construction includes an overhead pulley which is inaccessible 'to the installer after the frame has been assembled.

In window structures of the character shown in the accompanying drawing,.it has been found that the sash cord will very often pull out from over the pulley, which causes the carpenter to entirely disassemble the window frame before the cord can be replaced. It has also been found that where the sash cord turns an abrupt corner around a sharp edge, the same is liable to become worn through constant friction at that point. It is in the light of these shortcomings that the novelly constructed ferrule has been designed to present a protecting lip which serves both as a stop to prevent the first mentioned action on the part of the sash cord and second as a protecting lip conforming to the curvature of the sash cord at a point where the same is needed to preserve the life of the wood.

With these broad general objects in mind, attention will be given to the specific details of construction which are embodied in the preferred form illustrated in the accompanying drawing.

Figure 1 is a side elevation of a sash cord ferrule made in accordance with this invention and showing the same in the operative position.

Fig. 2 is a vertical longitudinal section through the ferrule.

Fig. 3 is a side plan of the same entirely removed from the cord.

Fig. 4 is an end elevation of the ferrule.

Fig. 5 is a fragmentary sectional view through a portion of a window frame and sash showing the relation of the ferrule to the various parts of this window structure. 7 Fig. 6 is a fragmentary sectional view 59 with the ferrule in elevation, illustrating the manner in which the same acts as a stop for the sash cord, and,

Fig. 7 is an end elevation of the ferrule shogving the same spread to receive the sash cor In describing the specific structure and function of-the sash cord ferrule embodying the preferred form of the invention, like reference characters will be used to designate similar parts throughout the several views and numerals 10 and 12 indicate the heat plate and style respectively,-of a window frame in which is sl-idably mounted the well known sash 14. While this sash cord ferrule may be used with all forms and types of sash cords, it is particularly useful in connection with window structures having an overhead pulley 16 which is mounted upon head plate l'Oby pressing the same into an opening 18,

through which passes the sash cord 20 from its attachment to sash 14 on one side of style 12 to the well known window Weight, not here shown, on the other side thereof.

Asash cord ferrule made in accordance with the present invention should consist of a tubular open end body which, for convenience, is herein called the collar 22. This collar 22 encircles sash cord 20 as clearly illustrated in the drawing and to facilitate potive position and when spurs 26 are embedded in cord 20 this angularity will insure a very positive non-releasing grip. Obviously, collar 22, together with spurs 26, will afford an effective binding ferrule for the end of cord 20 when the same has been pressed into position. It is through the use of this ferrule that cord 20 is secured to frame 14. As clearly-shown, an angled socket 28 is formed in the edge of sash 14 to receive collar 22, and since the pull is upwardly along cord 20 at right angles to socket'28 when the parts are assembled as illustrated in Fig. 1, it is obvious collar 22 in socket 28 will securely hold the cord against displacement. The length of collar 22 is also such that the same cannot be removed from socket 28 while the sash is in the assembled position. Reference to Fig. 5 will teach the relation between the length of collar 22 and the distance from the inner surface of style 12'to the entrance to socket 28. Obviously, the length of collar 22 should be greater than the last mentioned distance which further precludes displacement. After sash cord 20 leaves socket 28 it turns abruptly to pass over pulley 16. At the point of turn there is friction set up between cord 20 and the edge of socket 28 formed in sash 14. To preclude such destructive action a protecting lip 30 is formed at the end of collar 22 to project laterally therefrom and to curve slightly rearwardly to overhang collar 22. This lip 30 is preferably located diametrically opposite the line of split 24 and should be curved to conform to curvature of the sash cord when the same is in the operative position. To attain this curvature. the contacting face of lip 30 must be arcuate both laterally and transversely. \Vhen the ferrule is formed of sheet metal the lip will be convexo concave in both longitudinal and transverse cross sections. In the event the ferrule is cast or formed in other ways, the contacting surface 32 need only conform to the curvature of cord 20 and the back or opposite surface of lip 30 may be flat or any other desirable form.

Lip 30 extends laterally from collar 22 a distance sufiicient to strike head plate 10 in the event sash cord 20 is passed over pulley 16 to a point where sash cord 20 would normally become unthreaded and out of normal position. lVhen installing window struc tures, the frame is placed first and with it pulley 16 and cord 20. Later sash 14 is positioned. hen a ferrule made in accordance with this invention is used-it is not necessary to place an objectionable knot in cord 20 to preclude its displacement. Lip 30 serves as a stop in the manner shown in Fig. 6.

In assembling ferrule and cord, the staggered spurs 26 will readily pierce cord 20 when the sides of collar 22 are forced together through the use of an ordinary pair of pliers or a similar tool. The novel construction of ferrule and sash speeds up the operation of installing sash ll and it is obvious that the many points of invention embodied in this ferrule renders it a highly desirable article of manufacture.

Having thus described the invention and reserving the right to modify the specific embodiment of the same, what is claimed and desired to be secured by Letters Patent is:

1. A sash cord ferrule comprising a collar, a plurality of spurs pressed from the collar and a lip integral with the collar at one end thereof extending laterally therefrom, said lip being convexo-concave in both longitudinal and transverse cross section.

2. A sash cord ferrule formed of a single piece of sheet metal and comprising a longitudinally split collar and a lip at one end thereof extending laterally therefrom, said lip having an open arcuate cord-contacting face formed to partially encircle the cord at a point spaced from said collar.

3. A sash cord ferrule of unitary structure comprising a collar, an inwardly projecting spur pressed therefrom, and a laterally extending arcuate lip extending outwardly therefrom and having its outer face open and tangent to the inner longitudinal face of said collar.

l. A sash cord ferrule comprising a longitudinally split collar having a transversely extending open arcuate lip at one end there of diametrically opposite the split of said collar; and diametrically opposed spurs pressed inwardly from the walls of said collar at substantially right angles to the diametrical plane passing through the split of said collar.

In testimony whereof, I hereunto affix my signature.

ROY E. HAMILTON. 

